NXP Semiconductors FS32K142UAT0VLHT

Overview

FS32K142UAT0VLHT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller designed for real-time control in safety-critical ECUs. It operates at up to 112 MHz (HSRUN mode), features 256 KB flash with ECC, 256 KB SRAM with ECC, and supports -40 °C to +105 °C ambient operation in a 100-pin LQFP package. It integrates FlexCAN with CAN-FD, dual 12-bit ADCs (1 Msps), and CSEc cryptographic engine.

For engineers reviewing the FS32K142UAT0VLHT datasheet, FS32K142UAT0VLHT pinout, FS32K142UAT0VLHT application, or FS32K142UAT0VLHT equivalent, this page delivers verified technical context, validated pin mapping, confirmed memory architecture, functional safety features per ISO 26262 ASIL-B, and precise alternative part comparisons - all grounded in NXP's official S32K1xx Rev. 15 datasheet and orderable part number list.

Technical Context

The FS32K142UAT0VLHT implements a dual-core capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and optional M0+ co-processor support in family variants - though this specific part uses M4F only. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with configurable power modes (HSRUN, RUN, STOP, VLPR, VLPS) governed by PMC.

Memory subsystem comprises 256 KB program flash (ECC-protected), 256 KB SRAM (ECC-protected), 4 KB FlexRAM (configurable as SRAM or EEPROM emulation), and 4 KB code cache. Safety mechanisms include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and CSEc - though CSEc execution requires switching from HSRUN to RUN mode (80 MHz) due to hardware restriction.

Key Specifications

Pinout & Package

FS32K142UAT0VLHT is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch), pin-compatible with other S32K14x devices in the same footprint. This package supports full peripheral availability including all three LPUART/LIN modules, dual LPI2C, triple LPSPI, FlexCAN, Ethernet MAC (not enabled on this variant), and 81 GPIOs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Compared with FS32K142UAT0VLHT, FS32K144UAT0VLHT offers double memory and expanded connectivity for gateway roles, while FS32K142HAT0VLHT trades HSRUN capability for reduced BOM cost and thermal margin - enabling tiered platform scaling within the same pinout and software ecosystem.

Availability

FS32K142UAT0VLHT is available at Aetrix Electronics and suitable for automotive body electronics, electric power steering, battery management sensor nodes, and ADAS sub-controller applications requiring stable component supply across extended production lifecycles.

Supply support for FS32K142UAT0VLHT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in functional safety and automotive qualification standards.

The S32K1xx family - including FS32K142UAT0VLHT - was engineered specifically for ASIL-B automotive control units, emphasizing real-time determinism, memory safety, cryptographic security, and seamless integration with AUTOSAR and ISO 26262 development workflows.

FAQ

What is the maximum operating frequency of the FS32K142UAT0VLHT and under what conditions?

The FS32K142UAT0VLHT achieves 112 MHz in HSRUN mode, which requires VDD ≥ 2.7 V and ambient temperature ≤ +105 °C. Operation above 80 MHz is prohibited in RUN mode. The device automatically transitions to RUN mode (80 MHz) when executing CSEc cryptographic operations or EEPROM writes/erases - a hardware-enforced constraint documented in the S32K1xx datasheet Rev. 15.

Does the FS32K142UAT0VLHT support CAN-FD, and how is it implemented?

Yes, the FS32K142UAT0VLHT includes one FlexCAN module with full CAN-FD (ISO 11898-1) support, enabling data rates up to 5 Mbps in the data phase. It uses dedicated CAN0_TX/CAN0_RX pins in the 100-pin LQFP package and requires an external CAN transceiver. CAN-FD frame handling is managed in hardware with FIFO buffering and error confinement - no software polling overhead is required for standard operation.

What memory protection mechanisms does the FS32K142UAT0VLHT provide for functional safety compliance?

The FS32K142UAT0VLHT implements a System MPU at the crossbar switch level - not the Arm core MPU - enforcing memory access rights for CPU, DMA, and Ethernet masters independently. Combined with ECC on 256 KB flash and 256 KB SRAM, CRC module, WDOG, and EWM, it satisfies ASIL-B requirements per ISO 26262. These mechanisms are active across all power modes and require no runtime software configuration to remain effective.

Can the FS32K142UAT0VLHT execute cryptographic operations while running at 112 MHz?

No. The FS32K142UAT0VLHT cannot execute CSEc (Cryptographic Services Engine) commands or EEPROM write/erase operations in HSRUN mode (112 MHz). Attempting either triggers hardware error flags. The device must transition to RUN mode (80 MHz) before initiating these operations - a mandatory hardware restriction explicitly stated in the S32K1xx datasheet Rev. 15 section 1.1 and Figure 3 notes.

What is the GPIO count and interrupt capability of the FS32K142UAT0VLHT in its 100-pin LQFP package?

The FS32K142UAT0VLHT provides up to 81 GPIOs in the 100-pin LQFP package, each supporting configurable pull-up/down, slew rate control, and programmable interrupt generation on rising/falling edges or level detection. All GPIOs route through the NVIC with priority grouping and vectoring - enabling deterministic response to safety-critical events such as brake pedal press or airbag deployment signals.